Smoke-consumer.



,Maw/1,679. 'PATENTED MAY 21.1907'.

' P. VIDAL.

SMOKE CONSUMER.

APPLICATION FILED MAY 17,1906.

2 SHEETS-SHEET 1.

I NN NN PATENTED MAY 2l P. VIDAL. SMOKE CONSUMER. APPLIOATI'ON FILED HAY 17,1908.

No.' a54,679.

2 SHEETS-SHBBT 2.

VVi messes:

S v. e n Kl O t t A UNITED STATES PATENT FFTQE.

PHILIPPE vIDAL, oF sTE. oUNEGoNDE, QUEBEC, CANADA, AssIcNoE oF oNE-HALE To MARGARET M. MIEEAU, oF MONTREAL, CANADA.

SMOKE-CONSUMER.

Specification of Letters Patent.

' Patented May 21, 1907.

Application filed May 17,1906. Serial No. 317,280.

To /LZZ whom it may concern:

Be it known that I, PHILIPPE VIDAL, a.

subject of the King of Great Britain, residing lexact'description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to smoke consumers the object of my invention is to promote combustion in a boiler furnace by providing means for producing rotary currents of air and steam beneath the grate bars, and for producing rotary currents of air and steam above the grate bars, the latter of which currents have their axes at right angles to the former currents, and, my invention consists of the construction, combination and arrangement of parts, as herein illustrated, described and claimed.

ln the accom anying drawings, forming part of this app ication, I have illustrated one form of embodiment of my invention, in which drawingsisimilar reference characters designate corresponding parts, and in which:

Figure 1 is a central vertical section, illustrating one embodiment of my invention applied to a boiler furnace; Fig. 2 is a horizontal sectional view of the parts shown in Fig. 1, taken in a plane extending through the fire box g the grate bars being partly broken away, and Fig. 3 is a vertical sectional view, on the line 4 4 of Fig. 2.

Referring to the parts, 1 is the front furnace plate, which extends from the upper portion of the brick work 2 to the ground, and contains the feed doors 3 leading to the combustion chamber and the door 4 leading to the ashpit under said combustion chamber.

5 is the dome of a boiler inclosed within the brick Work 2, from which there leads a live steam sup ly pipe 6, which is provided with a stop va ve. 7, as best shown in Fig. 1.

. Leadingfrom the pipe 6 are laterals or steam conduits 8 and .9, conduit 8 leading to and through the perforated bells 10, which bells are provided with perforations 11 for the entrance of air therethrough, and the conduit 9 leading to the perforated bells 12, which are provided with similar perforations 11 for the ingress of air.

Leading from the conduit 8 to the bells 10, are short pipe sections 14, which are provided with a valve 15, by means of which steam may be admitted to or cut off from the perforated and flattened discharge nozzles 16, which discharge nozzles are provided with perforations 17, as best shown in Fig. 2 at the inner and wider ends thereof, which inner ends extend through the bell-shaped openings 16a in the front wall 2EL of the furnace and above the grate 19. Projecting inwardlyfrom the conduit 9, are steam supply pipes 21, 21'L1 and 22, each of which is provided with a valve 15 to permit the passage of steam therethrough, or to cut oii' said steam if desired.

The pipe 21 terminates within the ashpit, and relatively midway the distance between the front wall 2u of the furnace and the rear end 23 of the grate 19, a nozzle 24 being provided at the inner end of the pipe 21, said nozzle being provided with a i'lattened discharge end portion, the discharge opening of which rests in approximate parallelism with said grate 19. The conduit 22 is relatively longer, and like the conduit 21, terminates in a curved and flattened discharge nozzle 25, which extends for some distance farther toward the rear end 23 of the grate, and is curved inwardly, as shown in Fig. 2.

The pipe or conduit 21a is carried through the side wall 2, as shown in dotted lines in Fig. 2, and extends rearwardly beyond the grate, said conduit 21l being bent inwardly, and terminating in a discharge nozzle 26, which is projected upwardly, as shown in Figs. 2 and 3, the nozzle 26 being provided with a number of small perforations therein for the egress of steam.

Steam and air being admitted through the nozzle 24, a circular current will be produced, and the nozzle 25 at the same time being supplied with air, a second concentric current moving in an opposite direction will be produced, both of which currents will have vertical axes, and will be located below the grate. The heat from the fire and the presp sure through the nozzles will cause the currents to ascend. Steam and air being admitted through the nozzles 16, a current will be directed toward the rear wall of the com- IOO bustion chamber, and this current will be met by the current admitted through the upwardly extending nozzle 26 and will be defiected by the roof of the combustion chamber toward the front, so that a rotary current is produced having a horizontal axis, located above the grate. By this arrangement of draft currents, all parts of the combustion chamber are reached, so .that its entire area is affected, thus causing the complete combustion of fuel located on the grate.

As each of the conduits leading from the steam supply to the discharge nozzle is .provided with a valve, it is evident that the supply of steam to the interior of the combustion chamber and to the ashpit may be regulated to a nicety, and it is also evident that where separate valves are provided for each of said discharge nozzles, the fireman is able to keep his supply of steam under perfect control, and to direct it where in his judgment it is considered most desirable to promote combustion, or accelerate the draft, and in consequence, the apparatus in the hands of a careful fireman, is vastly superior to any automatic arrangement for supplying a relatively fixed quantity of steam, regardless of conditions in the combustion chamber.

Having described my invention, what I claim as new and desire to secure by Letters Patent is z- 1. In a smoke consuming furnace, a combustion chamber, a grate, an ash pit beneath said grate, means for producing a rotary current of air and steam beneath said grate, and means for producing a rotary current of air and steam above said grate at right angles to the first named current.-

2. In a smoke consuming furnace, a com-A bustion chamber', a grate, an ash pit beneath said grate, means for producing a plurality of horizontal rotary currents of air and steam beneath said grate, and means for producing a rotary current of air and steam above the grate at right angles to the first named currents.

3. In a smoke consuming furnace, a com bustion chamber, a grate, an ash pit beneath said grate, means for producing oppositely rotating horizontal currents of air and steam beneath the grate, and means for producing a rotary current of air and steam above the grate at right angles to the first named currents.

4. In a smoke consuming furnace, a combustion chamber, a grate, an ash pit beneath said grate, a nozzle extending laterally and rearwardly from one side of said ash pit near the rear end thereof, a nozzle extending laterally and rearwardly from the opposite side of said ash pit near the central portion thereof, a plurality of nozzles entering said combustion chamber above said grate at the front of said combustion chamber, a nozzle extending upwardly in the rear endof said combustion chamber, means for supplying steam and air to said nozzles, and means for regulating the supply of steam to each nozzle independently.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

PHILIPPE VIDAL.

Witnesses:

C. C. CoUsrNs, E. M. SLINEY. 

